17210-2107 DON 832AB (Xi Oph)

 
 
17h 21m 00.37s -21 06' 46.5" P.A. 29 sep 3.5 mag 4.40,8.90 Sp F1III-IV dist. 17.36 pc (56.63 l.y.)
 
 
Coord 2000
17210-2107
Discov num
DON 832
Comp
AB
Coord arcsec 2000
17 21 00.37 -21 06 46.5
Date first
1932
Date last
2010
Obs
16
Pa first
66
Pa last
29
P.A. Now (θ)
29°
Sep first
2.5
Sep last
3.5
Sep. Now (ρ)
3.5"
Mag pri
4.40
Mag sec
8.90
delta mag (ΔM)
4.5
Spectral class
F1III-IV (yellow-white)
Pri motion ra
+256
Sec motion ra
Pri motion dec
-211
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
17210-2107 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Xi Oph 185296 17210-2107 DON 832 AB 1932 2010 16 29 3.5 4.40 8.90 4.50 <===
Show 185296 17210-2107 TNN 8 AC 2004 2004 1 261 10.8 3.07 13.74 10.67
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
29.3
Precise sep
3.5
Name
Xi Oph
Cdsa2 id
DON 832 AB
Constellation
Ophiuchus
SAO
185296
HIP
84893
HD
156897
HR
6445
GC
23423
GL
Gl 670A
BD
BD-20 4731
Bayer
Xi Ophiuchi
Bayer name
Xi Oph
Flamsteed
40 Ophiuchi
Flamsteed name
40 Oph
Ra deg
17.350102777777778
De deg
-21.112916666666667
Distance
17.36
Distance ly
56.63
last precise pa
29.3
last precise sep
3.5
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17210-2107 DON 832 AB 2010 16 29 3.5 4.40 8.90 F1III-IV N 172100.37-210646.5

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